html,body{
    height: 100%;
    background: #222d32;
    overflow: hidden;
}

.panel-primary{
  width: 400px;
  margin: 200px auto;
  .panel-title{
      font-size: 30px;
      height: 50px;
      line-height: 50px;
      text-align: center;
  }
}